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Packera glabella (Poiret) C. Jeffrey. Common name: Butterweed, Smooth Ragwort, Smooth Groundsel, Yellowtop. Phenology: Mar-early Jun. Habitat: Swamp forests, bottomland forests, cleared areas in bottomlands, wet agricultural fields, ditches, often in mucky soils. Distribution: E. NC south to s. FL, west to e. TX, north in the interior to sw. WV, OH, MO, and SD.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, Fl7, FNA20, Il, K4, Mi, Pa, Tn, WH3, Barkley (1999); = Senecio glabellus Poir. — C, F, G, GrPl, GW2, Oh3, RAB, S, SE1, WV, Barkley (1978); = Senecio lobatus Pers. Basionym: Senecio glabellus Poir. 1806

Links to other floras: = Packera glabella - FNA20

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: OBL
  • Great Plains: FACW
  • Midwest: FACW
  • Northcentral & Northeast: FACW

Heliophily ⓘ: 5

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image of plant© Brady Beck | Original Image ⭷
image of plant© Alan Cressler: Packera glabella, Lime Creek floodplain, Sumter County, Georgia 1 by Alan Cressler source | Original Image ⭷
image of plant© Scott Ward
image of plant© Keith Bradley | Original Image ⭷
image of plant© Will Stuart | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Scott Ward
image of plant© Scott Ward
image of plant© Scott Ward
image of plant© Scott Ward
image of plant© Scott Ward | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect annual/biennial of swamp forests, bottomland forests and cleared areas in bottomlands, often in mucky soils.

Stems: Stems stout, hollow, branched in inflorescence, light green to reddish-green.

Leaves: Leaves alternate; petiolate; elliptic to oblong-lance-shaped; 2-8 in. long (reduced and sessile upward); deeply lobed, with the lobes nearly opposite (pinnate), irregular in shape and toothed.

Inforescence:

Flowers: Composite flowers (heads) in branched terminal clusters and smaller clusters from leaf axils; heads about 1/2 in. wide, consisting of 5-15 yellow ray florets encircling a center disk of tiny, golden yellow, tubular florets.

Fruits: Fruit a small, tufted achene.

Comments:

Height: 1-3 ft.

plant sale text:

bloom table text:

description: Erect annual/biennial of swamp forests, bottomland forests and cleared areas in bottomlands, often in mucky soils.

stems: Stems stout, hollow, branched in inflorescence, light green to reddish-green.

leaves: Leaves alternate; petiolate; elliptic to oblong-lance-shaped; 2-8 in. long (reduced and sessile upward); deeply lobed, with the lobes nearly opposite (pinnate), irregular in shape and toothed.

inflorescence:

flowers: Composite flowers (heads) in branched terminal clusters and smaller clusters from leaf axils; heads about 1/2 in. wide, consisting of 5-15 yellow ray florets encircling a center disk of tiny, golden yellow, tubular florets.

fruits: Fruit a small, tufted achene.

comments:

cultural notes:

germination code:

native range:



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